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https://github.com/timescale/timescaledb.git
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44941f7bd2
Add support for compress_chunks function. This also adds support for compress_orderby and compress_segmentby parameters in ALTER TABLE. These parameteres are used by the compress_chunks function. The parsing code will most likely be changed to use PG raw_parser function.
70 lines
3.9 KiB
Plaintext
70 lines
3.9 KiB
Plaintext
-- This file and its contents are licensed under the Timescale License.
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-- Please see the included NOTICE for copyright information and
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-- LICENSE-TIMESCALE for a copy of the license.
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\set ON_ERROR_STOP 0
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--table with special column names --
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create table foo2 (a integer, "bacB toD" integer, c integer, d integer);
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select table_name from create_hypertable('foo2', 'a', chunk_time_interval=> 10);
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NOTICE: adding not-null constraint to column "a"
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table_name
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------------
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foo2
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(1 row)
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ALTER TABLE foo2 set (timescaledb.compress, timescaledb.compress_segmentby = '"bacB toD",c' , timescaledb.compress_orderby = 'c');
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ERROR: cannot use the same column c in compress_orderby and compress_segmentby
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ALTER TABLE foo2 set (timescaledb.compress, timescaledb.compress_segmentby = '"bacB toD",c' , timescaledb.compress_orderby = 'd');
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select * from _timescaledb_catalog.hypertable_compression order by attname;
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hypertable_id | attname | compression_algorithm_id | segmentby_column_index | orderby_column_index | orderby_asc | orderby_nullsfirst
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---------------+----------+--------------------------+------------------------+----------------------+-------------+--------------------
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1 | a | 4 | | | |
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1 | bacB toD | 0 | 1 | | |
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1 | c | 0 | 2 | | |
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1 | d | 4 | | 1 | t | t
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(4 rows)
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-- Negative test cases ---
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--basic test with count
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create table foo (a integer, b integer, c integer);
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select table_name from create_hypertable('foo', 'a', chunk_time_interval=> 10);
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NOTICE: adding not-null constraint to column "a"
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table_name
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------------
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foo
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(1 row)
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insert into foo values( 3 , 16 , 20);
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insert into foo values( 10 , 10 , 20);
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insert into foo values( 20 , 11 , 20);
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insert into foo values( 30 , 12 , 20);
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-- should error out --
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ALTER TABLE foo ALTER b SET NOT NULL, set (timescaledb.compress);
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ERROR: ALTER TABLE <hypertable> SET does not support multiple clauses
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ALTER TABLE foo ALTER b SET NOT NULL;
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select attname, attnotnull from pg_attribute where attrelid = (select oid from pg_class where relname like 'foo') and attname like 'b';
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attname | attnotnull
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---------+------------
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b | t
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(1 row)
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ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_segmentby = 'd');
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ERROR: column d in compress_segmentby list does not exist
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ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'd');
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ERROR: column d in compress_orderby list does not exist
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ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'c desc nulls');
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ERROR: expect first/last after nulls in compress_orderby list
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ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'c desc nulls thirsty');
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ERROR: expect first/last after nulls in compress_orderby list
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ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'c climb nulls first');
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ERROR: unexpected token climb in compress_orderby list
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ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'c nulls first asC');
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ERROR: unexpected token asC in compress_orderby list
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ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'c desc nulls first asc');
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ERROR: unexpected token asc in compress_orderby list
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ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'c desc hurry');
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ERROR: unexpected token hurry in compress_orderby list
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ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'c descend');
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ERROR: unexpected token descend in compress_orderby list
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ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_segmentby = 'c asc' , timescaledb.compress_orderby = 'c');
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ERROR: column c asc in compress_segmentby list does not exist
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